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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $209,540 | $186,260 | $308,275 | $809,035 | $370,251 | $472,708 | $512,071 |
| Decolourising earths & fuller's earth | $130,520 | $240,579 | $102,655 | | | | |
| Fire-clay | $24,660 | $25,807 | $51,734 | $18,806 | $17,484 | $35,765 | $34,529 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $1,575,485 | $1,342,467 | $1,752,685 | $1,837,580 | $1,518,081 | $1,915,587 | $1,888,265 |
| Andalusite, kyanite & sillimanite | $5,055 | | | | | $16,838 | |
| Mullite | $36,185 | | $2,151 | | $26,360 | $251 | $6,699 |
| Chamotte/dinas earths | $22,267 | $12,535 | $20,267 | $354 | $981 | $10,570 | $1,707 |
| Total | $2,003,712 | $1,807,648 | $2,237,767 | $2,665,775 | $1,933,157 | $2,451,719 | $2,443,271 |
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